在一行中显示多个变量？

Question

所以我正在编写一个程序，该程序读取最长 80 个字符的消息，并使用 push、pop 和 isempty 方法将其显示回用户。唯一的问题是，一行中将打印一个变量，因此向后的消息一次一个字母地垂直向下显示在屏幕上。代码如下，有人可以告诉我正确的命令或需要修复的地方吗？

public class StackUser

{
static Scanner keyboard = new Scanner(System.in);

public static void main(String[] args)
    {
        int length;
        int I = 0;
        char currChar;
        int Max = 80;
        myStack Placeholder;
        Placeholder = new myStack();

        System.out.println("Please enter any word or sentence up to a maximum of 80 characters long.");
        String userEnter = keyboard.nextLine();
        length = userEnter.length();
        if (length < Max)
            {

                while (I < length)
                    {
                        char res = userEnter.charAt(I); 
                        Placeholder.PushChar(res); 
                        I = I + 1;
                    }
            }   
        if (Max < length)
            {

                while (I < Max)
                    {
                        char res = userEnter.charAt(I);
                        Placeholder.PushChar(res);
                        I = I + 1;
                    }
            }
        while (Placeholder.IsEmpty() != true)
            {
                currChar = Placeholder.PopChar();
                System.out.println("Here is your message backwards:" + currChar);
            }

        }
}

Answer 1

只需使用 print 而不是 println:

    System.out.print("Here is your message backwards: ");
    while (Placeholder.IsEmpty() != true) {
        currChar = Placeholder.PopChar();
        System.out.print(currChar);
    }
    System.out.println();

在一行中显示多个变量？

Displaying multiple variables on single line?

java

stack

push

is-empty